Another thought, I think Hamster-Bamster had a good suggestion to "try it" and see if you like it. You said yourself that emotionally you two are like a "house on fire"! That's pretty exciting to me. When you kiss someone you're emotionally attracted to, it can definitely ignite flames you may never know you had. It may be a "different" kind of love for you. Perhaps a more mature kind. Maybe you're not ready for that yet and still want to play the field more, which is o.k. too. It sounds like you just don't want to lose her while your "playing around". Maybe you could keep in contact through email or an occasional phone call. However, the conversations will have to be kept to a minimum to allow for a separation period.